Maps are either too open or too generic (try and be inovative, don't limit yourself to square maps and tetris-like tiles) , too many sniper spamlines, some of them could be fit for DM if made bigger but as CTF maps they are not adequate, but don't be discouraged, i guess everybody's first maps were like this

Waterball, you should try and avoid 1 square spaces and try to think about maps that are less fire spawn open. Think about a map you would like to play on and take some inspiration and hints from some of the most played out maps.